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在几何学中,异相双四角台塔是约翰逊多面体之一(J29)。就像同相双四角台塔(J28)一样,它可以通过把两个正四角台塔(J4)的八边形面合在一起来创造。它们之间的差别是,两个正四角台塔的位置相差45度。
棱长为a的异相双四角台塔的表面积(A)和体积(V):[1]
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